:root{
  --bg:#f4f6fb; --card:#fff; --ink:#1a2233; --muted:#7a8699;
  --line:#e6eaf2; --brand:#4f46e5; --brand-d:#4338ca;
  --ok-bg:#e7f7ec; --ok-ink:#1a7a3d; --err-bg:#fdecec; --err-ink:#b3261e;
  --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans Bengali",sans-serif;
  background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}

/* topbar */
.topbar{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:700;font-size:18px;color:var(--ink)}
.topbar nav a{margin-left:18px;font-weight:500;color:var(--ink)}
.topbar nav a.on{color:var(--brand)}
.topbar nav a.muted{color:var(--muted)}
main.wrap{padding-top:24px;padding-bottom:60px}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;margin-bottom:20px}
.card-h{margin:0 0 16px;font-size:16px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
.stat{text-align:center;padding:22px 12px}
.stat-num{font-size:30px;font-weight:700;color:var(--brand)}
.stat-lbl{color:var(--muted);font-size:13px;margin-top:4px}

/* forms */
label{display:block;font-size:13px;font-weight:600;margin:0 0 6px;color:#3a4460}
.opt{color:var(--muted);font-weight:400}
input,select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;font-family:inherit;background:#fbfcfe}
input:focus,select:focus{outline:none;border-color:var(--brand);background:#fff}
.row{display:flex;gap:14px;margin-bottom:14px}
.fld{margin-bottom:14px;flex:0 0 220px}
.fld.grow,.row .fld.grow{flex:1}
.create-form .row .fld{margin-bottom:0}
.btn{border:0;border-radius:10px;padding:11px 22px;font-size:14px;font-weight:600;
  cursor:pointer;font-family:inherit}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-block{width:100%;margin-top:8px}

/* alerts */
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-size:14px}
.alert.ok{background:var(--ok-bg);color:var(--ok-ink)}
.alert.err{background:var(--err-bg);color:var(--err-ink)}

/* table */
.table-wrap{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:12px;
  text-transform:uppercase;letter-spacing:.03em;padding:8px 10px;border-bottom:1px solid var(--line)}
.tbl td{padding:11px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.tbl .num{text-align:right}
.shortlink{font-weight:600}
.shortlink.big{font-size:18px}
.dest span,.dest{max-width:220px;display:inline-block;white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;color:var(--muted);vertical-align:bottom}
.copy{margin-left:8px;font-size:11px;padding:3px 9px;border:1px solid var(--line);
  background:#fff;border-radius:6px;cursor:pointer;color:var(--muted)}
.copy:hover{border-color:var(--brand);color:var(--brand)}
.actions{white-space:nowrap;text-align:right}
.mini{font-size:12px;padding:5px 10px;border:1px solid var(--line);border-radius:7px;
  margin-left:5px;color:#3a4460;background:#fff;cursor:pointer;display:inline-block}
.mini:hover{border-color:var(--brand);color:var(--brand)}
.mini.danger:hover{border-color:#e0563f;color:#e0563f}
.empty{color:var(--muted);text-align:center;padding:20px 0}

/* geo bars */
.tbl.geo td{border-bottom:0;padding:7px 10px}
.geo .flag{font-size:18px;width:30px}
.geo .cname{width:150px}
.geo .bar{width:100%}
.geo .bar span{display:block;height:10px;background:linear-gradient(90deg,#6366f1,#818cf8);
  border-radius:6px;min-width:3px}
.geo .num{width:60px}

/* link head */
.link-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.dest2{color:var(--muted);margin-top:8px;font-size:14px;word-break:break-all}
.ttl{margin-top:6px;font-weight:600}
.bigclicks{text-align:center;min-width:120px}
.back{display:inline-block;margin-bottom:16px;color:var(--muted);font-weight:500}
.mono{font-family:ui-monospace,Menlo,monospace;font-size:12px;color:var(--muted)}

/* login */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:36px;width:100%;max-width:360px;text-align:center;
  box-shadow:0 10px 40px rgba(30,40,80,.08)}
.login-logo{font-size:40px}
.login-card h1{margin:6px 0 2px;font-size:22px}
.login-card .sub{color:var(--muted);margin:0 0 22px;font-size:14px}
.login-card label{text-align:left}
.login-card form{text-align:left}
.login-card input{margin-bottom:14px}

.foot{color:var(--muted);font-size:12px;text-align:center;padding:24px 0}

@media(max-width:640px){
  .cards{grid-template-columns:1fr;gap:12px}
  .row{flex-direction:column;gap:14px}
  .fld{flex:1}
  .create-form .row .fld{margin-bottom:14px}
}